Additional file 5: Fig. S3. (a) None of the mRNA expressions of ABCB1, ABCB9, ABCC1, ABCC2, ABCC3, ABCC5, ABCF2 and ABCG2 is significantly different between the metastasized and non-metastasized CRC patients. M0: no metastasis, M: metastasis. (b) None of the mRNA expressions of ABCB1, ABCB9, ABCC1, ABCC2, ABCC3, ABCC5, ABCF2 and ABCG2 is significantly different between the recurrent and non recurrent CRC patients post initial therapy. (c) None of the mRNA expressions of ABCB1, ABCB9, ABCC1, ABCC2, ABCC3, ABCC5, ABCF2 and ABCG2 in the CRC patients with tumor is significantly higher than those without tumor